Adjustable door

Details Adjustable door Adjustable door

1975-03-31

1977-05-31

Gilliam, Paul R.

Movable or removable closures

With protective grille or safety guard

Adjustable to various size opening

49503, E06B 906

Patent

active

040260704

ABSTRACT:
An adjustable security barrier comprising three sections whose relationship to each other can be adjusted to expand or contract the area covered by the security barrier. The barrier uses hidden wedge nuts, with bolts to secure the sections together. The bolts and nuts are inaccessible when the barrier is in the locked position. A sliding rod is adapted to be inserted into a hole in the passageway so that the barrier can be locked into place by the use of a padlock. Hinged mounting plates allow free swinging motion of the barrier. The hinges and mounts are inaccessible when the barrier is in the locked position.

REFERENCES:
patent: 935673 (1909-10-01), Miller
patent: 1662117 (1928-03-01), Kuhl
patent: 1873229 (1932-08-01), VAN Dresser
patent: 2755525 (1956-07-01), Minot
patent: 3299596 (1967-01-01), Neal et al.
patent: 3738062 (1973-06-01), Ughi
patent: 3832805 (1974-09-01), Stevens

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